The attempt to 'storm Area 51' has ended with two people being detained and no reports of alien sightings or breakouts.
While over 2 million people signed up for the Facebook event, only around 1,500 people so far have gathered at festival sites at towns near the military site, and around 150 made the extra journey to the site's gates, local officials say.
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One man was arrested after he urinated near the gate.
"We arrested one guy for indecent exposure out of Canada at the gate," Lincoln County Sheriff Kerry Lee told the USA TODAY Network.
A woman was also detained for "investigative purposes" after allegedly trying to duck under a gate.
However, for the most part, the crowd was well-behaved. According to The New York Times, "the celebratory crowd, some of whom wore tin foil hats, chanted about aliens and admired the cuteness of a dog that accompanied a man wearing camouflage and had a rifle strapped to his chest."
"It's a relief that it's not as bad as we thought it was going to be," Lee said.
Area 51 has been shrouded in secrecy for decades, stoking conspiracy theories that it housed the remnants of a flying saucer and the bodies of an alien crew from the crash of an unidentified flying object in Roswell, New Mexico, in 1947.
The US government did not confirm the base existed until 2013, when it released CIA archives saying the site was used to test top-secret spy planes.
Reuters / Newshub.
